Talkmobile 3G settings not working

[Jellyfrog]

I own the Lumia 710, and 3G is NOT working on the Talkmobile UK sim. Visits to the website for settings, and calls for settings all bring the same results: an APN that isn't working!! The 3G settings worked on my old rooted HTC HD2.

Anybody else having issues like this that have maybe been resolved??

Thank you!